Yes, as stated above, ReSound aids do this in the ReSound app, at least on iPhones.
You should understand that there are limitations to the effectiveness of this feature which likely are not limited to ReSound aids. The aids are not transmitting a precise location via GPS. The aids use Bluetooth to be in contact with your cellphone; move the phone 25 feet away from the aids, and that connection is lost. So the app must be running and be set to allow location services for that app to be running Always, the phone must be in contact with a cell transmitter or a wifi hotspot, something that knows your location on the map, at the time you lose an aid. It won’t help you after the fact if you haven’t set the phone up to show the location before you lost the aid. If you’ve left your cellphone out of Bluetooth range of the aids, or if you’re out in a remote location with no cell service that can show you on a map where you are, the app will not know where the missing aid went missing. It also won’t know where the aid is if somebody finds it after you lost it and relocates it. Also Find My just gets you in the ballpark of the location. Find My is better than nothing, but it’s far from a guarantee that your phone will know where a missing aid is or that you will get it back.
re: comments above saying that if you only put your aids in the charger when not wearing them, you won’t lose them and won’t need Find My. In many cases, sure, this will prevent loss, but people do lose aids without intending to take them out, for example when removing hats, hoods, eyeglasses, and Covid masks… anything in the vicinity of the ears.